I have an 8x10 of my college senior class photo, which considering class size and the likelihood of no shows is probably somewhere between 500 and 1000 kids. It was taken outdoors on a slope with the photographer on a ladder. The part of the image filled with people is probably more like 5x9 'cause there's a building in the background and some grass at the bottom and sides. You can actually make out faces pretty well. I'd say the front half of the group is totally recognizeable and the back half is recognizeable if you know who you're looking for.
I'd say an 8x10 is fine for a group of 130. My highschool band never did photos, but I've seen photos of my boyfriend's highschool band, which I think was around 100 kids, and they're all totally recognizeable in an 8x10. I'd say try to position yourself fairly high, even though they're on risers and try not to go too wide with your lens (back up to zoom in) to keep things even. |